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SERVICE INSTRUCTION
K 82, 85, 101, 102, 104, 151, 155
K82/85/101/102/104/151/155.58.0211.Eng/Digital
Exchange of Stator Unit
If the motor overload protector has tripped repeated times, the
stator should be checked. Remove the junction box cover. Re-
move the motor cable leads from the terminal board. Record the
colours of the cable leads and corresponding terminal board
letters (or numbers).
Check the stator insulation by using a 500 V megger. The
megger reading should exceed 1 megohm between the winding
phases as well as between the windings and ground (stator
housing). If the insulation resistance is below 1 megohm the
stator unit should be dried in an oven the temperature preferably
not to exceed 90° C.
Check the circuit of the three (3) built-in thermal contacts for
continuity, using an ohmmeter or bridge. If the circuit is open the
defective contact should be identified by checking each indi-
vidual thermal contact. The faulty thermal contact can be by-
passed in accordance with the wiring diagram below.
Contact no 1 defective
All three contacts working
Contact no 2 defective Contact no 3 defective
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